Fixed Shipkit link and tests

Author: mockitoguy

gradle/release.gradle

@@ -13,8 +13,8 @@ gradlePlugin {
 }
 
 pluginBundle {
-    website = 'https://github.com/shipkit/org.shipkit.shipkit-changelog'
-    vcsUrl = 'https://github.com/shipkit/org.shipkit.shipkit-changelog.git'
+    website = 'https://github.com/shipkit/shipkit-changelog'
+    vcsUrl = 'https://github.com/shipkit/shipkit-changelog.git'
     plugins {
         changelog {
             displayName = 'Shipkit changelog plugin'

src/test/groovy/org/shipkit/changelog/ChangelogFormatTest.groovy

@@ -15,7 +15,7 @@ class ChangelogFormatTest extends Specification {
                 "2020-01-01")
 
         then:
-        changelog == """<sup><sup>*Changelog generated by [Shipkit Changelog Gradle Plugin](https://github.com/shipkit/org.shipkit.shipkit-changelog)*</sup></sup>
+        changelog == """<sup><sup>*Changelog generated by [Shipkit Changelog Gradle Plugin](https://github.com/shipkit/shipkit-changelog)*</sup></sup>
 
 #### 1.0.0
  - 2020-01-01 - [5 commit(s)](https://github.com/myorg/myrepo/compare/v0.0.9...v1.0.0) by mockitoguy, john
@@ -30,7 +30,7 @@ class ChangelogFormatTest extends Specification {
                 "2020-01-01")
 
         then:
-        changelog == """<sup><sup>*Changelog generated by [Shipkit Changelog Gradle Plugin](https://github.com/shipkit/org.shipkit.shipkit-changelog)*</sup></sup>
+        changelog == """<sup><sup>*Changelog generated by [Shipkit Changelog Gradle Plugin](https://github.com/shipkit/shipkit-changelog)*</sup></sup>
 
 #### 2.0.0
  - 2020-01-01 - [2 commit(s)](https://github.com/myorg/myrepo/compare/v1.5.5...v2.0.0) by mockitoguy